function getCookie(c_name)
{
if (document.cookie.length>0)
{
c_start=document.cookie.indexOf(c_name + "=")
if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1 
    c_end=document.cookie.indexOf(";",c_start)
    if (c_end==-1) c_end=document.cookie.length
    return unescape(document.cookie.substring(c_start,c_end))
    } 
}
return ""
}

function setCookie(email,password,expiredays)
{
var exdate=new Date()
exdate.setDate(exdate.getDate()+expiredays)
document.cookie='email'+ "=" +escape(email)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString());

document.cookie='password'+ "=" +escape(password)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString());

}
function DelCookie(name)
{
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = getCookie (name);
document.cookie = name + "=" + cval + "; expires="+ exp.toGMTString();
}
